agricultural

blade

button

circle

closeup

craft

cut

digging

emery

equipment

form

friction

glove

gloves

grind

grinder

grinding

heavy

implement

industrial

industry

iron

knife

machine

machinery

manufacture

master

mechanic

metal

process

production

profession

professional

safety

sandpaper

sharpen

sharpener

sharpening

shovel

sparkle

sparks

stone

switch

table

tool

tradition

turner

wooden

worker

workers